What is action? What is inaction? Even the wise are puzzled by this question. Therefore, I will tell you what action is. When you know that, you will be free from all impurity. You must learn what kind of work to do, what kind of work to avoid, and how to reach a state of calm detachment from your work. The real nature of action is hard to understand.
He who sees the inaction that is in action, and the action that is in inaction, is wise indeed. Even when he is engaged in action he remains poised in the tranquillity of the Atman.
The seers say truly
That he is wise
Who acts without lust or scheming
For the fruit of the act:
His act falls from him,
Its chain is broken,
Melted in the flame of my knowledge.
Turning his face from the fruit,
He needs nothing:
The Atman is enough.
He acts and is beyond action.
-Bhagavad-Gita: The Song of God